余热回收的相变换热装置设计及运行  

Design and Operation of a Phase Change Heat Exchanger for Waste Heat Recovery

作　　者：闫全英 马超 王威[2] YAN Quanying;MA Chao;WANG Wei(School of Environmental and Energy Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;Institute of Process Engineering,Chinese Academy of Science,Beijing 100190,China)

机构地区：[1]北京建筑大学环境与能源工程学院,北京100044 [2]中国科学院过程工程研究所,北京100190

出　　处：《实验室研究与探索》2021年第6期97-100,共4页Research and Exploration In Laboratory

基　　金：北京市教委科技计划重点项目(KZ201710016011);北京学者计划项目资助(2015NO.022)。

摘　　要：为实现间歇性低温余热转换为连续热量输出,提高低温余热利用率,通过对比多种不同构造换热器的特点,设计了一种用于余热回收的相变蓄热放热装置。该蓄热放热装置可填充不同的相变材料,并根据所选择相变材料的相变潜热、蓄放热量和蓄放热时间及占地等要求设计换热装置的结构形式和尺寸。选取主要设备并搭建了完整的蓄热-放热周期的实验循环系统,通过改变入口水温、系统循环流量、蓄热时间等多种工况对系统换热性能进行实验研究。研究结果可为相变蓄热放热装置在低温工业余热的回收利用方面提供参考和依据。In order to solve the problem of converting intermittent low-temperature waste heat into continuous heat output and to improve the utilization of low-temperature waste heat, by comparing the characteristics of different heat exchangers, a phase change heat storage and heat release device for waste heat recovery is designed. Designed heat storage and exothermic device can be filled with different phase change materials. The paper designs the structure and size of the heat exchange device according to the phase change latent heat, heat storage heat release, heat storage heat release time, area requirements of the selected phase change material, and builds a complete heat storage-heat cycle experimental system. The heat transfer performance of the system can be experimentally studied by changing the water temperature, flow rate, heat storage time and other working conditions. The research results can provide a reference and basis for the recovery and utilization of low-temperature industrial waste heat by phase change heat storage and exothermic devices, and promote the application of phase change heat recovery devices in the field of waste heat recovery.

关 键 词：余热回收 相变材料 相变蓄热技术 系统设计 

分 类 号：TK02[动力工程及工程热物理]